What is the role of the AV node in the heart?

A. Starts heartbeat A.

B. Speeds up impulses B.

C. Delays impulse to allow atria to empty C.

D. Contracts ventricles directly D.

Correct Answer: C সঠিক উত্তর: C

Explanation ব্যাখ্যা

The atrioventricular (AV) node is a part of the heart's electrical conduction system that receives an electrical impulse from the sinoatrial (SA) node. Its primary function is to slightly delay the transmission of this impulse to the ventricles, ensuring that the atria have enough time to fully empty their blood into the ventricles before they contract.

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Correct Answer: C সঠিক উত্তর: C

Explanation ব্যাখ্যা

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